Messages in this thread Patch in this message | | | From | Pavel Begunkov <> | Subject | [PATCH 1/2] io_uring: prep req when do IOSQE_ASYNC | Date | Wed, 22 Jan 2020 23:09:35 +0300 |
| |
Whenever IOSQE_ASYNC is set, requests will be punted to async without getting into io_issue_req() and without proper preparation done (e.g. io_req_defer_prep()). Hence they will be left uninitialised.
Prepare them before punting.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- fs/io_uring.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/io_uring.c b/fs/io_uring.c index 09503d1e9e45..cdbc711ae5fd 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -4558,11 +4558,15 @@ static void io_queue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe) ret = io_req_defer(req, sqe); if (ret) { if (ret != -EIOCBQUEUED) { +fail_req: io_cqring_add_event(req, ret); req_set_fail_links(req); io_double_put_req(req); } } else if (req->flags & REQ_F_FORCE_ASYNC) { + ret = io_req_defer_prep(req, sqe); + if (unlikely(ret < 0)) + goto fail_req; /* * Never try inline submit of IOSQE_ASYNC is set, go straight * to async execution. -- 2.24.0
| |